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    Vertical deflection circuit with raster correction
    81.
    发明公开
    Vertical deflection circuit with raster correction 失效
    Vertikalablenkschaltung mit Rasterkorrektur

    公开(公告)号：EP0808058A2

    公开(公告)日：1997-11-19

    申请号：EP97401056.3

    申请日：1997-05-12

    申请人： THOMSON CONSUMER ELECTRONICS, INC.

    发明人： Truskalo, Walter ,  Knight, Peter Ronald ,  Smith, Lawrence Edward

    IPC分类号： H04N3/22

    CPC分类号： H04N3/233 ,  H04N3/22

    摘要： An electron beam tends to slope downwardly as it is deflected horizontally to form a raster in a video display apparatus. The sloping of the beam can cause geometric errors in the raster, for example orthogonality and parallelogram errors. A raster correction circuit (100) substantially offsets the downward slope of the electron beam by modulating a vertical deflection current (I V ) with an induced horizontal-rate raster correction current (I CORR ), thereby substantially eliminating orthogonality and parallelogram errors in the raster. In respective embodiments of an inventive arrangement taught herein, the horizontal-rate raster correction current (I CORR ) is induced in the vertical deflection coils (L V1 , L V2 ) by magnetically coupling a filament pulse waveform (11), a horizontal deflection voltage waveform, or a horizontal deflection current into the vertical deflection coils (L V1 , L V2 ).

    摘要翻译： 电子束倾向于向下倾斜，因为它被水平偏转以在视频显示装置中形成光栅。 光束的倾斜可能导致光栅中的几何误差，例如正交性和平行四边形误差。 光栅校正电路（100）通过用诱导的水平光栅校正电流（ICORR）调制垂直偏转电流（IV），从而基本上消除了光栅中的正交性和平行四边形误差，从而基本上抵消了电子束的向下斜率。 在本文教导的本发明装置的各个实施例中，通过磁耦合灯丝脉冲波形（11），水平偏转电压波形或水平偏转电压波形，在垂直偏转线圈（LV1，LV2）中感应出水平速率光栅校正电流（ICORR） 水平偏转电流进入垂直偏转线圈（LV1，LV2）。

    Video cassette recorders
    84.
    发明公开
    Video cassette recorders 有权
    录影机

    公开(公告)号：EP0923238A3

    公开(公告)日：2007-01-17

    申请号：EP98403075.9

    申请日：1998-12-08

    申请人： THOMSON multimedia

    发明人： Dumont, Franck ,  Tan, Chee Lam

    IPC分类号： H04N5/775

    CPC分类号： H04N5/775

    摘要： VCR (1) connectable to a television receiver (2) and a decoder of scrambled signal (16) in which means are foreseen so that in a first stand-by mode of the VCR (1) called ECO1 mode, if no scrambled signal is received by the television receiver (2) only the video signal is routed to the decoder (16) through the VCR (1), and if a scrambled signal is received then also the audio signal is routed through the VCR (1).
    Due to the savings in power by switching off the audio signal, ECO1 mode consumption is about 3W.